Licensed games have existed since the days of E.T. In some ways, the reasons for the shift to mobile are obvious, as these games can be cheaper to make, faster to develop, and have the potential to reach a much larger audience - an especially useful trait when they're meant to help promote a movie. It's a trend that's becoming increasingly common, as just recently we've seen mobile games based on everything from Fast & Furious 6 to Man of Steel to World War Z. And that's exactly what Reliance Games did - only instead of a big budget console or PC release, the Pacific Rim game is available now on your iOS or Android device. Pacific Rim is a movie where giant robots battle giant aliens, which makes it just about the best kind of film to get a video game spin-off.